P0101
Mass Air Flow Circuit
Range/performance Problem
• Dirty air cleaner
• Oil cap or dipstick missing or not installed correctly
• Air leak in intake system
• Contaminated, deteriorated or damaged mass air flow sensor
• Faulty mass air flow sensor or throttle position sensor
• Poor connections between ECM and MAFS or TPS
If any codes relating to MAFS are present, do all repairs
associated with them before proceeding with this
troubleshooting area.
P0102
Mass Air Flow Circuit Low Input
• Short to ground between MAFS and ECM
• Signal line open between MAFS and ECM
• Faulty MAFS
P0103
Mass Air Flow Circuit High Input
• Short to Battery between MAFS and ECM
• Ground open between MAFS and EGI main relay
• Ground open or Poor connections between open or short to
battery between MAFSand ECM
• Faulty MAFS
P0112
Intake Air Temperature Circuit
Low Input
• Short to ground between IAT sensor and ECM
• Short between IAT sensor wires
• Faulty IAT sensor
P0113
Intake Air Temperature Circuit
High Input
• Open or short to battery between IAT sensor and ECM
• Faulty IAT sensor
P0115
Engine Coolant Temperature
Circuit Malfunction
• Open or short to battery between ECTS and ECM
• Short to ground between ECTS and ECM
• Short between ECTS wires
• Faulty ECTS
P0116
Engine Coolant Temperature
Sensor Circuit
Range/Performance Problem
• After engine start-up, the measured coolant temperature
shows no variation after detecting the calculated coolant
temperature variation (engine coolant temperature sensor
input is stuck.)
• Poor connections between ECT sensor and ECM
• Misplaced, loose or corroded terminals
• Foreign materials fouled ECTS
• Faulty ECTS
If any codes relating to ECTS are present, do all repairs
associated with them before proceeding with this
troubleshooting area.
P0117
Engine Coolant Temperature
Circuit Low Input
• Short to ground between ECTS and ECM
• Short between ECTS wires
• Faulty ECTS
P0118
Engine Coolant Temperature
Circuit High Input
• Open or short to battery between ECTS and ECM
• Faulty ECTS
P0119
• Poor connections between ECTS and ECM
Page 4 of 14
24.04.2008
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